of albert lea



Y. 1,613,323 Jan 4 1927' A. GREEN ADJUSTING VALVE Filed NOV. 5 1923 INvE/v ra/.

HND/75W GREEN,

ett)

Patented Jan. 4, 1927.

UNITED STATE PATENT OFFCE.

ANDREW GREEN, OF ALBERT LEA, MINNESOTA, ASSIGNOR TO AMERICAN GAS MA-CHINE COMPANY, INC., OF ALBERT LEA, MINNESOTA, A CORPORATION OF MNNE-SOTA.

ADJUSTING VALVE.

Application led November This invention relates to a valve and conduitior conducting tluid, and while the invention is capable of manyapplications, it is particularly designed and illustrated for use inconnection with a gas or liquid fuel burning stove. ln such stoves ithas been the practice to use a long conduit or tube 'tor conducting thefluid, either liquid or gaseous, at the end ot which tube was formed avalve. rlhis valve necessitated having a bore ot' much smaller diameterin the conduit than the diameter oit' the greater portion of the lengththereof. lt is impracticable and impossible as an economical commericalproposition to use one piece and to bore the saine for a larger diameterfor the entire length ot the tube. The reduced di ameter was obtained atone time by driving a brass plug into the end of the tube. Thisstructure, however, proved objectionable as the heating ot the conduitinvaribly caused leaks about the plug. It was later proposed to use asteel plug and to braze the saine to the tube. The use ot the steel plughas also proven objectionable whether driven into the tube or brazcdthereto as in the use oi the device and in the heating and coolingthereof leaks would occur about the plug. The present invention was thenmade to overcome the diiiiculty encountered in the use of differentkinds of plugs inserted into the tube or conduit.

lt is an object of this invention, theretore, to provide such a conduitand valve in which the plug is formed ot a separate piece of materialand after being finished, is butt-welded onto the tube.

It is more specially an object of the invention, therefore, to providesuch a method in which a separate iron or steel plug is i'ormed boredwith a comparatively small diameter and a slightly larger diameter toform a valve seat and after being finished is butt-welded onto the endof the conduit which has much thinner walls.

These and other objects and advantages of the invention will be fullyset forth in the following description made in connection with theaccompanying drawings in whichlike reference characters refer to thesame parts throughout the dierent views, and in which,

Fig. 1 is a view in side elevation of a portion of the above valvestructure in which 5, 1923. Serial No. 672.857.

the invention is used, the device being broken away to show the same;

ign 2 is a vertical longitudinal section through a portion ot the deviceshown in Fig. l, also being broken away to show the length thereof;

Fig. is a View in side elevation of the movable portion of the valve;and

Fig. is a view in vertical section of the finished plug and end ot' theconduit bet'ore the same are welded together'.

Referring to the drawings, a valve structure used in connection with thestove is illustrated comprising a long tube or conduit l having one endconnected to a hollow coupling bracket having a supporting lug 3 and athreaded nozzle Ll depeni'ling therefrom. The fluid or gaseous mediumbeing supplied through the nozzle il: into the bracket 2 and tube l.Yl`he bracket 2 has a packing nut 5 thereon and a stein 6 projectingthrough the parts l, 2 and 5 and is equipped with an operating handwheel 7 at one end thereof. The tube l has, at its other end, a portionl of smaller diameter which com prises a bore ot comparatively smalldialneter S and a bore of larger diameter 9, the valve seat l0 beingformed at the junction ot' said bores. The outer end of portion l istapped to receive a nozzle plug 1l and the inner end thereof is alsotapped or threaded to receive the threaded portion 6 adjacent the end ofstem G. A longitudinal groove 6b is formed throughout the threadedportion 6 so that the Huid can pass through said portion. The stem (i isalso formed at the outer end ot the threaded portion 6 with portions otdifferent diameters forming a valve 6C and a pin 6h is formed on theouter end ot the stem 6, which pm projects through the opening in thenozzle plug l1, shown in Fig. 2.

The operation of the structure will be apparent. The iuid passes throughthe tube l through the longitudinal groove 6", through the bores 8 and 9when the valve 6 is opened and then out through the nozzle ll. It isthus seen that it is necessary to have the portion la of a much lessinterior diameter than the portion l.

In order successfully to construct the device and also economically toconstruct the same in accordance with the present invention, acylindrical plug is formed which is designated as la, in Fig. l. rlhisplug is bored with the bores 8u and 9L and provided With tapped orthreaded portion lb" as Well as with a tapped portion at its other endwhich is adapted to receive the nozzle plug ll. After the plug lla hasbeen finished, the saine is butt-Welded onto the end of the tube l.lVhile various methods of Welding' may be used, the parts, preferably,are electrically Welded. The tube l and the plug lHSL are broughttogether With their axes in alinement and the same are then heated bythe Welding current and the two parts thus securely and permanentlyjoined as one integral piece. YWhen the parts are so Welded, the devicealready described comprising the parts l and lat is formed. Both. theplugv and the tube are of iron or steel so that an integral andhomogeneous structure is formed. This structure successfully endures theheating and cooling to which the saine is subjected without any leaks orcracks being;` formed therein.

From the above description it is seen that applicant has invented asimple and efficient method of forming such a conduitand valvestructure. The invention has been amply demonstrated in actual practiceand found to be very successful and eiiicient. rlhe same overcomes adifficulty Which has been en countered through a long period.

t will, of course, be understood, that various changes may be made inthe steps of the process and the sequence thereof Without departing fromthe scope of applicants invention, Which, generally stated, consists 1na device and method capable of carrying out the objects above stated,such as shown and described and defined in the appended claims. y

What is claimed is:

i. A combined vaporizing tub-e and valve for a liquid hydrocarbon stove,comprising` a comparatively long piece of tubing, a solid cylindricalplu of much shorter length, having a bore therein, which bore forms avalve seat therein, said plug having` a small bore extending from saidvalve seat, said irst mentioned bore beingl of considerably smallerdiameter than the internal diameter of said tube, said tube beingbutt-Welded to the end of said plug having,l said lirst mentioned boretherein, thus forming` an integral conduit liaving` a bore throughoutthe length thereof, and aA valve stein adapted to entend through saidtube and havingY a valve thereon co-opeintingi` with said valve seat.

Q. The method of nialring,` a conibfned vaporiiaing,l tube and valve fora liquid hydrocarbon stove which consists in providing` a comparativelylong piece of tubing, forming` a solid cylindrical. plug,` of muchshorter length, forming` a bore in said plug and forming a valve seattherein and forminga small bore extending from said valve seat, saidfirst mentioned bore being,` of considerably smaller diameter than theinternal diameter of said tube and then butt-Welding one end oit' saidtube and the end of sait plug` having' the first mentioned bore thereintogether so as to leave the bores 'therein une obstructed, thus formingan integral con duit having` a bore throughout the length thereof, andproviding a valve stem adapted to extend through said conduit andhaving` a valve thereon co-operatingl with said valve seat.

ln testimony whereof l affix my signature.

A NDRETW GREEN.

